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4 Written questions

3 Multiple choice questions

  1. The term "monophyletic" refers to a taxon that includes an ancestral species and all of its descendants.
  2. wolf
  3. "tinkering" with existing structures

3 True/False questions

  1. Hox genes are thought to play an important role in the development of different morphologies because _____.

    they affect the timing of reproductive development in the organism
    they paved the way for the development of multicellular organisms
    they affect the order of genes on certain chromosomes
    they affect the timing of development in the embryo
    they provide positional information in the embryo
    the homolog has evolved more slowly in mice.

          

  2. Radiometric dating _____.

    allows us to determine an absolute, errorless date
    only works on rocks younger than 75,000 years
    allows us to indirectly date fossils up to billions of years old based on minerals in surrounding volcanic strata
    relies on the fact that the daughter isotope decays to the parent isotope at a constant rate
    can be used to directly date fossils in sedimentary rock
    "tinkering" with existing structures

          

  3. The relative lengths of the frog and mouse branches in the phylogeny in Figure 26.13 in your textbook indicate that

    frogs evolved before mice.
    the genes of frogs and mice have only coincidental homoplasies.
    the homolog has evolved more slowly in mice.
    the homolog has evolved more rapidly in mice.
    mice evolved before frogs.
    they provide positional information in the embryo

          

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